EP 2232164 A1 20100929 - SYSTEM FOR ROTOR COOLING
Title (en)
SYSTEM FOR ROTOR COOLING
Title (de)
SYSTEM FÜR ROTORKÜHLUNG
Title (fr)
SYSTÈME DE REFROIDISSEMENT DE ROTOR
Publication
Application
Priority
- US 2008088520 W 20081230
- US 1796607 P 20071231
Abstract (en)
[origin: WO2009088846A1] A motor coolant method and system is used to cool a compressor motor (36) in a refrigeration system having a multi-stage compressor (38). The compressor includes a first compressor stage (42) and a second compressor stage (44), the first compressor stage providing compressed refrigerant to an input of the second compressor stage. The motor coolant system has a first connection with the refrigerant loop to receive refrigerant into the motor cavity for cooling, the received refrigerant provided from a system component having a high pressure, and a second connection with the refrigerant loop to return refrigerant to an intermediate pressure greater than an evaporator operating pressure. The pressure inside the motor cavity may be approximately the pressure within the first stage discharge and second stage suction to minimized seal leakage between the motor cavity and the internal pressures of the first and second stage compressors.
IPC 8 full level
F25B 1/10 (2006.01); F25B 31/00 (2006.01)
CPC (source: EP US)
F04D 25/06 (2013.01 - EP); F04D 29/102 (2013.01 - EP); F04D 29/5806 (2013.01 - EP); F25B 1/10 (2013.01 - EP US); F25B 31/006 (2013.01 - EP US); F25B 2400/13 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009088846 A1 20090716; CN 101896779 A 20101124; CN 101896779 B 20150715; EP 2232164 A1 20100929; EP 2232164 B1 20200325; JP 2011508182 A 20110310; JP 2014006046 A 20140116; JP 5749316 B2 20150715; KR 101570235 B1 20151118; KR 20100115749 A 20101028; TW 200937814 A 20090901; TW I410028 B 20130921; US 2010307191 A1 20101209; US 8424339 B2 20130423
DOCDB simple family (application)
US 2008088520 W 20081230; CN 200880120334 A 20081230; EP 08869317 A 20081230; JP 2010541514 A 20081230; JP 2013215412 A 20131016; KR 20107017107 A 20081230; TW 97151658 A 20081231; US 74559308 A 20081230